Loose-leaf binder



Nov. 4, 1930. J. N. MORTENSEN 1,780,835

LOOSE LEAF BINDER Filed Oct. 11, 1928 2 Sheets-Sheet 1 INVENTOR JENS N.MORTENSEN 1930- J. N. MORTENSEN 1,780,835

LOOSE LEAF BIfiDER Filed Oct. 11, 1928 2 Sheets-Sheet 2 INVENTOR JENSN.MORTENSEN Patented Nov. 4, 1930 D S AT JENS N. MORTENSEN,

LOOSE-LEAF Brnn aa Application filed October 11, 1928. Serial No.311,3?14.

My invention relates to loose leaf extensible post binders of a type inwhich the locking means are independent of the posts on which the sheetsare threaded. V j

The object of my invention is to provide such a loose leaf binder havinga reduced number of parts, and which is economical to manufacture andeasy to operate.

In the drawings 1 1 Figure 1 is a perspective view of the back of abinder made according to my invention, the two parts of the binder beingseparated;

Figure 2 is an end elevation of the back of the same binder;

Figure 3 is a view similar to Figure 2, but in vertical section throughthe back taken on the line 33 of Figure 4;

Figure 4 is an elevation of the back of the '20 binder from the insidetaken on the line 44 of Figure 2; portions of the binder and of theloose leaves or sheets contained therein being cut and broken away;while Fig. 5 is a horizontal section through the back of the bindertaken on the line 5-5 of Figure 4.

The device comprises top and bottom binding bars 10 and 11, bearingmeans for retaining the perforated leaves or sheets 14. The

retaining means may be of any suitable kind. In the drawings they are ofthe alternating post type, that is to say, they comprise posts 12carried by one binding bar alternated with posts 13 carried by the otherbinding bar.

The binder may be provided. with covers 30,

31 of any desired type, which may be secured to the binding bars by anysuitable means, as

by rivets 32. 7

An adjustable back of the binder is formed from two flanges 15, 16mounted on'and forming back portions for the binding bars 10 and 11respectively. These flanges cover the back edges of the sheets andtelescope with each other. To keep the flanges in register witheachother the ends 17 of the flange 16 of the lower bar 11 are bentaround the ends 18 of the upper flange 15 as shown in Figure 1. The ends18 of the upper flange are crimped over upon themselves to "providebetter parts. v

The novel means for locking thetwo'binding bars together'includesvertical s'lots'19 in the upper flange having notches 20 therein and:catches on the lower flan'ge moving'in the; slots. The slots 191-2L16.open \at theiiree edge of the flange to permitseparation of the top andbottom bars. Thereare'tw0 slots=19 in the upper; flange and -';thenotches :20 are. inithe edgesolfthe slotsadjacent the nearest end,v ofthe flange. The two fcoo'per'ating' catches, onthe lower flangeincludeas'tud 21c TENT- F A or BROOKLYN, NEW YORK, assreivon To. BOQRUMearners}: cp' IPANY, or NEW YORK, N. Y., A oonronnrronor onnwvonxguiding surfacesbetween'the two i adapted to engage'andybe.ret'ainedZbyEthe" v notches 20, each stud being mounted on the innerendof a pin 23 carried on the outer face ofthe lower flange 1165;;Eachstudproa jects through a slot 22 in1the flange, 16: into line withthenotchesQO. I a v When the two parts of the binder are'mutuallyengaged, as shown in F igure,4,spir'al springs '24 wound on the pins 2-3andsecured under "the heads 25 on the outer ends of the: pins each exertpressure which holds, thev stud'in engagement with anotch 20,vthussecuring the two parts of the binder together;

j To release-the clamp, the operator pressessimultaneously upon theheads 25; of"the,:-two..

spring pins.- Thispushesthe;studs21 to: W

Ward the center of the binder and out of engagement with the notches-20, whereupon the two parts of the binder maybe moved rel-. atively toeach-other; They may be entirely separated, as shown in Figure 1,7or theflange 15 may merely be raised orlowered slightly in the grooves 17 ofthe flange ltiguntileach stud =21 is opposite a higher Tora-lower notch20.. Then on releasingthe pressure upon the heads of the pins, thesprings24 'fo'rce the studs 21 apart backinto engagementgwith notchesQQ,thus-fastening thejtwo parts-oi. V i

the binder together again, y

- Other arrangements of the notches and; consequently" of the.stud-operating--=means, within the scope of the invention, will occur tothose skilledingtheart, j The spring "pin 23 niay be attachedto'theflange 16 in anysuitable manner, as; by the stop 26, riveted totheflange. w

The sprmg pins 23 j-may oe -covered the V 3. In'a loose leafpost bindera pair of housing 27, which Q may con'venie antly be formed of a channeliron, as shown in Figure '3. In the form illustrated in the drawings,

this channel iron is providedwith atop Jtlange 28 whichais'flushwiththeto'p of the fiangelG of thebottom bar, and need be nolon erthaniis necessar *toi honsel the hin e a y a; p n; The lower flange 29of the housing, 1s

q madelong enough to underlie the bottom bar I '1 In a 'looseleaf postbindenia flanged" binding bar, the flange being slotted adjacent ll fandmaybeattaehed'thereto'by the same I means 32 which attachthe" cover'31to the pressed locking stud on the back portion of the'other bindingbar, cooperating with the notched edge of the first binding ba'r,ftheendsof the back portion of one bar being bent to receive and guidetheends of the backpor- 70 tion of-the otheriq In testimo'nyilwhereof'ilhave signe my I 7' name to this specification. c t

' .J NS

bottom bar. If desired the'web of thechanf nel iron-27 may bemade'slightly longer than its flanges and may be bentat 33- toclose theV I housing, as shown in Figure 2.1

The springpins, :of course protrude through slots'in 33, and extend farenou h I f beyond the housing to allow: themto he pressedinwardly bythefingersof the opera bar;

parts heretofore used to give the expanding elementpfi :Iclaimz.

each end, and'the edge-ofeach slot'nearest the v I end of the flangebeing notched, in combina tion Wit'h'asecond flanged binding bar, mov

able studs carried byt'he-fiange of the second 1 bar cooperating withthenotches in the flange- 'ofthe first bar; and'stud-operating means onsaidsecondflange comprising a pin carrying each stud and a spiral springsurrounding r each pin to pressqthe; stud away from thei centerofthebinder to'lock the binder, said pins being adapted to 'bepressedinwardly from the ends ()f therbi d riby h Operator to unlockthebinder;c I

I '2. Ina loose leaf post binder a pairoibinding bars," eachhaving aback 'p0'rtion,'

the back portion of on'eb'inding bar being slotted and the'slot beingopen at one end and having a notched edge, inicombination with p aspring-pressed lockin'g'stud on theback portion of the other bindingbar; cooperating with the. notched'edge of theflfirst binding bar. 2 i Ibinding bars, each having aback portion, the

' back portion of one bindingbar being slottedand the slot being open atone end and having I a notched edge, in combination-with a'sprmg-

